Proper storage of an electric motor pressure washer when not in use is important to ensure that it continues to work efficiently and effectively over time. Here are some steps you can take to store your electric motor pressure washer:

Turn off and unplug the pressure washer: Before storing your pressure washer, make sure it is turned off and unplugged from the power source.

Drain the water from the system: Water left inside the pressure washer can freeze and cause damage to the machine, so it's important to drain all the water from the system before storing it. To do this, simply turn off the water supply, pull the trigger on the spray wand until all water has been expelled, and release the trigger.

Clean the machine: It's important to clean the pressure washer before storing it. This helps prevent any dirt, debris, or grime from building up and causing damage over time. Use a mild detergent and a soft-bristled brush to clean the machine.

Store in a dry, cool place: Store your pressure washer in a dry, cool place, away from direct sunlight and moisture. Make sure it's protected from the elements and from any potential hazards.

Prepare for long-term storage: If you're planning to store your pressure washer for an extended period of time, you should take some additional steps to prepare it. This may include adding a fuel stabilizer to the gas tank (if it's a gas-powered pressure washer), removing the spark plug and adding a few drops of oil to the cylinder, and removing the battery (if it has one) and storing it in a cool, dry place.